Acer 4740G - Manual (Page 37)

Chapter 1 27
Audio Interface
Features • Compliant with Universal Serial Bus Specification Revision 2.0
• Compliant with USB Mass Storage Class Bulk only Transport Specification
Rev. 1.0
• Support High-speed (480Mbps) and Full-speed (12Mbps) Data Transfer
• USB bus power operation
• Support Control, Bulk IN / OUT data pipes
• Support the following memory card interfaces:
• Secure Digital TM (SD), MultiMediaCard TM (MMC), Mini-SD, Micro-SD
(T-flash), RS-MMC,
• Mobile-MMC and MMC-micro
• Memory Stick TM (MS), Memory Stick PROTM (MS-PRO), MS Duo, MS-
PRO Duo and Micro-MS (M2)
• MSPRO-HG Duo 8-bit mode
• xD-Picture Card TM (xD) including Type M and Type H
• Support hardware ECC (Error Correction Code) function
• Support hardware CRC (Cyclic Redundancy Check) function
• Programmable clock rate for flash memory card interfaces
• Support MS-PRO v1.02
• Support MS v1.43
• Support MS PRO-HG Duo v1.01
• Support SD version 2.0
• Support MMC version 4.2
• Support xD v1.2
• Integrated Fast 8051 microprocessor
• External serial EEPROM interface
• 12MHz crystal oscillator with integrated PLL
• Support 48Mhz directly input from clock generator
• On chip 3.3V to 1.8V regulator
• On chip MOSFET with 250mA capability for direct power control of all
types memory cards
• Support Spread Spectrum Clock for SD/MMC and MS/MSPRO/HG to
reduce EMI effect
• Support USB remote wake-up ability with memory card inserted and
removal operation
• Automatically controls USB online / offline to reduce power consumption
• 48-pin LQFP package
Item Specification
Audio Controller REALTEK ALC888S-VC
Audio onboard or
option Onboard
Mono or Stereo Stereo
Internal Microphone AC-coupled input,100mV
P-P
maximum
Internal speaker/
Quantity 2 * 4 Ohm 2W Main Speakers
Item Specification